Home / 2,947.78-4,070.34-1,901.62

Finding the Fourth Proportional to 2,947.78, 4,070.34 and 1,901.62

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Solution

The fourth proportional to 2,947.78, 4,070.34 and 1,901.62 is: 2,625.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.78 : 4,070.34 = 1,901.62 : x
  2. Step 2: Convert to fraction form
    2,947.78/4,070.34 = 1,901.62/x
  3. Step 3: Cross multiply
    2,947.78x = 4,070.34 × 1,901.62
  4. Step 4: Simplify right side
    2,947.78x = 7,740,239.95
  5. Step 5: Solve for x
    x = 7,740,239.95/2,947.78
  6. Step 6: Final answer
    x = 2,625.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.